The Lemon-bellied Crombec (Sylvietta denti) is a species of African warbler, formerly placed in the family Sylviidae. It is found in Angola, Cameroon, Central African Republic, Republic of the Congo, Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Gabon, Gambia, Ghana, Guinea, Liberia, Nigeria, Sierra Leone, and Uganda. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist shrubland.